目的研究野核桃Juglans cathayensis叶的化学成分。方法使用多种柱色谱技术对野核桃叶95%乙醇提取物进行分离纯化,根据理化常数和波谱数据对化合物的结构进行鉴定。结果共鉴定出21个单体化合物,分别为2-(n-octacosanoxy)ethanol(1)、(+)-galeon(2)、jugcathninA(3)、2-乙氧基胡桃醌(4)、山柰酚(5)、山柰酚-3-O-吡喃葡萄糖苷(6)、槲皮素-3-O-吡哺葡萄糖苷(7)、6,7-二羟基香豆素(8)、Z-P—coumaryl—hexacosanoate(9)、香草酸(10)、咖啡酸(11)、邻苯二甲酸(12)、二十四烷酸(13)、-2十八烷醇(14)、十六烷酸-a-单甘油酯(15)、二十九烷醇(16)、二十五烷醇(17)、硬脂酸(18)、软脂酸(19)、3-谷甾醇(20)、β-胡萝卜苷(21)。结论化合物1为新化合物,化合物2~21均为首次从野核桃叶中分离得到。
Objective To study the chemical constituents from the leaves of Juglans cathayensis. Methods The chemical constituents were isolated by various chromatography techniques and their structures were elucidated on the basis of spectroscopic analysis. Results Twenty-one compounds were isolated and identified as 2-(n-octacosanoxy) ethanol (1), (+)-galeon (2), jugcathnin A (3), 2-ethoxyjuglone (4), kaempferol (5), kaempferol-3-O-glucopyranoside (6), quercetin-3-O-glucopyranoside (7), 6, 7-dihydroxy- coumarin (8), Z-P-coumaryl-hexacosanoate (9), vanillic acid (10), caffeic acid (ll), phthalic acid (12), isoselachoceric acid (13), octacosanol (14), daturic acid 2, 3-dihydroxyopropyl (15), nonacosyl alcohol (16), pentacosane alcohol (17), octadecanoic acid (18), hexadecanoic acid (19), β3-sitoterol (20), and β-daucosterol (21), respectively. Conclusion Compound 1 is new and compounds 2--21 are isolated from the leaves old.. cathayensis for the first time.